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Investigation of size effects in the electrical resistivity of single electrochemically fabricated gold nanowires

Karim, Shafqat and Ensinger, Wolfgang and Cornelius, T. W. and Neumann, R. (2008):
Investigation of size effects in the electrical resistivity of single electrochemically fabricated gold nanowires.
In: Physica E: Low-dimensional Systems and Nanostructures, Elsevier Science Publishing Company, pp. 3173 - 3178, 40, (10), [Online-Edition: http://www.sciencedirect.com/science/article/B6VMT-4SMWFM1-1...],
[Article]

Abstract

Single gold nanowires with diameters ranging between 80 and 300 nm were fabricated by electrochemical deposition in single-pore membranes. The wires were contacted by means of a macroscopic planar electrode on each membrane side. The resistance-versus-diameter behavior was measured and is discussed considering finite-size effects, i.e., additional electron scattering both at the wire surface and at grain boundaries. Resistance-versus-temperature curves display characteristics like a bulk metal that shows a linear behavior down to about 70 K and finally approaches a limited value below 40–50 K with a residual resistivity ratio ρ300 K/ρ20 K≈2.5. The temperature-dependent resistivity data of wires with diameters larger than 200 nm fit well with the model of Mayadas and Shatzkes for grain-boundary scattering, thus confirming that surface scattering is negligible in this range.

Item Type: Article
Erschienen: 2008
Creators: Karim, Shafqat and Ensinger, Wolfgang and Cornelius, T. W. and Neumann, R.
Title: Investigation of size effects in the electrical resistivity of single electrochemically fabricated gold nanowires
Language: English
Abstract:

Single gold nanowires with diameters ranging between 80 and 300 nm were fabricated by electrochemical deposition in single-pore membranes. The wires were contacted by means of a macroscopic planar electrode on each membrane side. The resistance-versus-diameter behavior was measured and is discussed considering finite-size effects, i.e., additional electron scattering both at the wire surface and at grain boundaries. Resistance-versus-temperature curves display characteristics like a bulk metal that shows a linear behavior down to about 70 K and finally approaches a limited value below 40–50 K with a residual resistivity ratio ρ300 K/ρ20 K≈2.5. The temperature-dependent resistivity data of wires with diameters larger than 200 nm fit well with the model of Mayadas and Shatzkes for grain-boundary scattering, thus confirming that surface scattering is negligible in this range.

Journal or Publication Title: Physica E: Low-dimensional Systems and Nanostructures
Volume: 40
Number: 10
Publisher: Elsevier Science Publishing Company
Uncontrolled Keywords: Size effects; Electrical resistivity; Gold nanowires
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 06 Jul 2009 13:54
Official URL: http://www.sciencedirect.com/science/article/B6VMT-4SMWFM1-1...
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